
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X370S10CP is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. It is the small end of the range, for light-duty precision positioning in a tight envelope — compact stages, small pick-and-place heads and inspection fixtures.
AirTAC's LRM12L1X370S10CP is a complete set: a 12 mm wide stainless-steel rail cut to 370 mm, carrying one long recirculating-ball carriage. This is the top-mount version - fixing holes sit on the rail's upper face, the most straightforward way to bolt a guide onto a machined base. Accuracy grade P (precision) and preload C (medium) both appear in the code, so the set is aimed at compact machines where play must be eliminated and straightness matters.
A long carriage spreads the ball contact over a greater length, which steadies an overhung tool or camera better than a standard block would. The medium preload trades a little running drag for rigidity, so plan on ground or finish-milled mounting surfaces to get the full benefit of the P grade. The double-lip seal scrapes grease and dust, an outer cover keeps larger debris off the seal strip, and the balls are manufactured to ISO 3290 G10 - a ball grade only. Keep the ambient at 80 C or below, with transients no higher than 100 C. Because AirTAC publishes no load or moment table for LRM, request the confirmed figures for this SKU through the RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X370S10CP |
|---|---|
| Series | LRM Series Miniature Linear Guide |
| Supplied as | Complete guide set |
| Construction | Recirculating ball, stainless-steel rail, common-rail design |
| Size code | LRM12 |
| Rail width | 12 mm |
| Carriage length | Long carriage |
| Carriages supplied | 1 |
| Rail length | 370 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision grade |
| Preload grade | C — medium preload |
| Mounting screws | M2 or M3 rail screws depending on size |
| Lubrication | Pre-filled with Kyodo Yushi PS No. 2; top up through the rear lubrication hole |
| Ambient temperature | Up to 80 °C ambient, 100 °C transient peak |
| Interchangeability | LRM carriages fit LRM rails of the same model |
Specifications follow the official AirTAC LRM catalogue. The catalogue does not publish load or moment ratings, running parallelism, speed limits, or carriage base material for LRM. We will not quote a figure we cannot source — ask us and we will confirm it for your model.
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X370 | 1 carriage on a 370 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| C | C — medium preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| P | P — precision grade. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 370 mm |
| Carriage | Yes, 1 |
Rail and carriage(s) supplied together, matched as a set. If you are not sure which form you need, send us the machine or the original part number and we will confirm it before you order.
A benchtop lens-measurement slide needs straightness more than muscle; precision grade P and a long carriage keep an overhung camera steady along a 370 mm sweep of the 12 mm rail.
Aligning a small laser diode module to a target demands play-free motion; preload C eliminates lash, and the top-mount rail bolts straight onto a milled optical baseplate.
On a low-volume SMT prototyping bench, a manually positioned placement head benefits from the low profile of a 12 mm guide and the consistent, damped feel of the medium preload.
When the load is heavy or hangs off a lever arm, LSH is the better series: its catalogue lists dynamic, static and moment ratings per carriage, giving you numbers to design with, which LRM withholds. For very short travel where crossed-roller stiffness matters more than envelope, compare LGC. Checklist for this SKU: complete set form, 12 mm rail width, long (L) carriage, one block on a 370 mm rail, preload C, precision (P) accuracy, top-mount rail. Note that stocked rail length, not size, drives most of the price spread - two rail widths cover a stock range of roughly $66 to $831. Confirm the load rating for this exact model with us before committing.
Quick checklist
This set is 12 mm rail width, 370 mm rail length, one long carriage, preload C (medium), accuracy P (precision), top-mount fixing. Fasten with M2 screws torqued to 58.8 N.cm in steel, 39.2 N.cm in cast iron or 29.4 N.cm in aluminium; M3 screws take 196, 127 and 98 N.cm in the same order. Ambient must stay at or below 80 C, with peaks no higher than 100 C. Carriages arrive greased with Kyodo Yushi PS No. 2; top up every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM - we confirm the figure for this exact model when you submit the RFQ.
Choose LRM when the envelope is tiny and the duty light, as here: a 12 mm rail with a long carriage suits compact positioning heads. Step up to LSH when the load becomes substantial or cantilevered, because LSH publishes dynamic, static and moment ratings per carriage that you can calculate against - LRM publishes none, so the figure is confirmed per model. If travel is short and crossed-roller rigidity is the goal, look at LGC instead. Send us the stroke, load description and duty cycle and we will size it with you.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours. We can also confirm the load and moment rating for this model.